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Japan Bond Yields Hit Multi-Year Highs as Inflation Fears Shake Global Debt Markets

Kuala Lumpur, 15 May 2026 – Japan’s government bond market came under renewed pressure on Friday as yields climbed to multi-year highs, reflecting a broader global selloff in sovereign debt driven by inflation concerns, elevated oil prices and shifting expectations over central bank policy.

The move was most pronounced at the longer end of Japan’s yield curve. The 30-year Japanese government bond yield rose to 4% for the first time since the instrument was introduced in 1999, while the 20-year yield climbed to 3.61%, its highest level since 1996. The 40-year yield also reached its highest point since its launch in 2007, underscoring growing investor unease over long-duration debt.

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Author

  • Kenji Yamamoto is a Senior Fellow at The Ledger Asia, where he explores the critical nexus of Asian international relations, economic development, and environmental sustainability. With extensive experience in cross-border policy analysis, Kenji provides a unique perspective on how diplomatic alliances and green energy transitions drive long-term growth across the Asia-Pacific.

    Previously an advisor for regional development banks, he specializes in sustainable infrastructure and the circular economy’s role in modernizing emerging markets. At The Ledger Asia, Kenji’s deep-dive reports help readers navigate the complex balance between rapid industrialization and the global imperative for climate resilience and corporate responsibility.

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